<template>
  <view class="my-settle-container">
    <!-- 全选 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
    </label>
    <!-- 合计 -->
    <view class="amount-box">
      合计：<text class="amount">￥{{checkedGoodsAmount}}</text>
    </view>
    <!-- 结算按钮 -->
    <view class="btn-settle" @click="settlement">
      结算（{{checkedCount}}）
    </view>
  </view>
</template>

<script>
  import {
    mapGetters,
    mapMutations,
    mapState,
  } from 'vuex'
  export default {
    name: "my-settle",
    data() {
      return {
        //倒计时的秒数
        seconds: 3,
        //定时器的ID
        timer:null
      };
    },
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total','checkedGoodsAmount']),
      ...mapGetters('m_user',['addstr']),
      ...mapState('m_user',['token']),
      ...mapState('m_cart',['cart']),
      isFullCheck() {
        return this.total === this.checkedCount
      }
    },
    methods: {
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      ...mapMutations('m_user',['updateRedirectInfo']),
      changeAllState() {
        this.updateAllGoodsState(!this.isFullCheck)
      },
      //用户点击了结算按钮
      settlement(){
        if(!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')
        if(!this.addstr) return uni.$showMsg('请选择收货地址！')
         // 3. 最后判断用户是否登录了，如果没有登录，则调用 delayNavigate() 进行倒计时的导航跳转
          // if (!this.token) return uni.$showMsg('请先登录！')
          if (!this.token) return this.delayNavigate()
          
          this.payOrder()
      },
      async payOrder(){
        //1、创建订单
        //1.1 组织订单的信息对象
        const orderInfo = {
          order_price: 0.01,
          consignee_addr: this.addstr,
          goods: this.cart.filter(x => x.goods_state).map(x => ({
            goods_id:x.goods_id,
            goods_number:x.goods_count,
            goods_price:x.goods_price
          }))
        }
        //1.2 发起请求创建订单
        const {data:res} = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
        if(res.meta.status !== 200) return uni.$showMsg('创建订单失败！')
        // 1.3 得到服务器响应的“订单编号”
        const orderNumber = res.message.order_number
        // console.log(orderNumber)
        //===========================================================================================================
        // 2. 订单预支付
          // 2.1 发起请求获取订单的支付信息
          const { data: res2 } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', { order_number: orderNumber })
          // 2.2 预付订单生成失败
          if (res2.meta.status !== 200) return uni.$showMsg('预付订单生成失败！')
          // 2.3 得到订单支付相关的必要参数
          const payInfo = res2.message.pay
          // console.log(payInfo)
          // 3. 发起微信支付
             // 3.1 调用 uni.requestPayment() 发起微信支付
             const [err, succ] = await uni.requestPayment(payInfo)
             // 3.2 未完成支付
             if (err) return uni.$showMsg('订单未支付！')
             // 3.3 完成了支付，进一步查询支付的结果
             const { data: res3 } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', { order_number: orderNumber })
             // 3.4 检测到订单未支付
             if (res3.meta.status !== 200) return uni.$showMsg('订单未支付！')
             // 3.5 检测到订单支付完成
             uni.showToast({
               title: '支付完成！',
               icon: 'success'
             })
      },
      //延时导航到my页面
      delayNavigate(){
        this.seconds = 3
        this.showTips(this.seconds)
        
        this.timer = setInterval(() => {
          this.seconds--
          if(this.seconds <= 0) {
            clearInterval(this.timer)
            uni.switchTab({
              url:'/pages/my/my',
                   // 页面跳转成功之后的回调函数
                   success: () => {
                     // 调用 vuex 的 updateRedirectInfo 方法，把跳转信息存储到 Store 中
                     this.updateRedirectInfo({
                       // 跳转的方式
                       openType: 'switchTab',
                       // 从哪个页面跳转过去的
                       from: '/pages/cart/cart'
                     })
                   }
            })
            return
          }
          
          this.showTips(this.seconds)
        }, 1000)
      },
      //展示倒计时的提示信息
      showTips(n){
        uni.showToast({
          icon:'none',
          title:'请登录后在结算！' + n + '秒之后自动跳转到登录页',
          mask:true,
          duration: 1500
        })
      }
    }
  }
</script>

<style lang="scss">
  .my-settle-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;

    .radio {
      display: flex;
      align-items: center;
    }

    .amount-box {
      .amount {
        color: #c00000;
        font-weight: bold;
      }
    }

    .btn-settle {
      background-color: #c00000;
      height: 50px;
      color: white;
      line-height: 50px;
      padding: 0 10px;
      min-width: 100px;
      text-align: center;
    }
  }
</style>
